CHAPTER37 Advanced SBC Features
Mediant 800 Gateway & E-SBC | User's Manual
■ IP Profiles table - main IP Profile:
● 'Extension Coders Group': Select the Coders Group with G.711 and Opus
● 'Voice Quality Enhancement': Enable
● 'RTP Redundancy Mode': Enable
● 'RTCP Feedback': Feedback On
● 'Max Opus Bandwidth': 0
■ IP Profiles table - alternative IP Profile:
● 'Extension Coders Group': Select the Coders Group with Opus
● 'Allowed Audio Coders': Select the Allowed Audio Coders Group with Opus
● 'Allowed Coders Mode': Restriction
● 'Voice Quality Enhancement': Enable
● 'RTP Redundancy Mode': Enable
● 'RTCP Feedback': Feedback On
● 'Max Opus Bandwidth': 0
■ Quality of Service Rules table (see Configuring Quality of Service Rules):
● 'Rule Metric': Poor InVoice Quality
● 'Alternative IP Profile Name': name of Alternative IP Profile (above)
● VoIPerfect is applicable only to G.711 and G.729 calls.
● If you are deploying a third-party device between the Enterprise SBC and Access
SBC, make sure that the third-party device adheres to the following:
✔ Enable RFC 2198 in SDP negotiation
✔ Enable TMMBR in SDP negotiation
✔ Forward the SDP with feedback (SAVPF) as is
✔ Forward TMMBR messages as is
✔ Forward RTCP messages as is (not terminate them)
✔ (Smart Transcoding only) Forward re-INVITE messages for using Opus as is
✔ (Smart Transcoding only) Forward the SIP header, X-Ac-Action as is
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